<div class="left-menu">
    <ul class="nav nav-tabs nav-stacked left">
        <li class="nav"><a href="<?php echo $this->createUrl('nav/index');?>">导航管理</a></li>
        <li class="article"><a href="<?php echo $this->createUrl('article/index');?>">文章管理</a></li>
        <li class="tags"><a href="<?php echo $this->createUrl('tags/index');?>">标签管理</a></li>
    </ul>
</div>